Howard prospects, Howard, Cotopaxi Mining District, Fremont County, Colorado, USAi
Regional Level Types | |
---|---|
Howard prospects | Group of Prospects |
Howard | - not defined - |
Cotopaxi Mining District | Mining District |
Fremont County | County |
Colorado | State |
USA | Country |
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Latitude & Longitude (WGS84):
38° 27' 5'' North , 105° 49' 30'' West
Latitude & Longitude (decimal):
Type:
Group of Prospects
Köppen climate type:
Nearest Settlements:
Place | Population | Distance |
---|---|---|
Howard | 723 (2011) | 0.9km |
Coaldale | 255 (2011) | 11.2km |
Salida | 5,467 (2017) | 17.7km |
Smeltertown | 120 (2011) | 19.6km |
Poncha Springs | 777 (2017) | 23.0km |
Nearest Clubs:
Local clubs are the best way to get access to collecting localities
Local clubs are the best way to get access to collecting localities
Club | Location | Distance |
---|---|---|
Columbine Gem and Mineral Society | Salida, Colorado | 18km |
Mindat Locality ID:
113006
Long-form identifier:
mindat:1:2:113006:8
GUID (UUID V4):
b09d8721-ddfa-48ba-9758-848b294db110
Former silica-feldspar (pegmatite) occurrences/prospects/mine located in sec. 36, T49N, R10E, NMM, 0.9 km (0.5 mile) ENE of Howard and about 16.8 km NW of Cotopaxi, 1.5 miles up Sand Gulch on its W side. The prospects are claimed by James Howard of Howard, Colorado.
Six pegmatites, ranging in width from 8 to 25 feet, can be traced for several hundred feet along the strike. They contain graphic granite, crystals of white, pink, green, and black feldspar, quartz, biotite, magnetite, and a little muscovite. The black color of some of the feldspar is caused by stain on closely spaced cleavage planes. One of the pegmatites contains feldspar crystals as much as 4 feet long. The pegmatites commonly contain only 5 to 10 percent of recoverable feldspar. The northernmost pegmatite narrows toward the E and grades into a biotite pegmatite that is so rich in magnetite that the outcrop is a gossan.
Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsCommodity List
This is a list of exploitable or exploited mineral commodities recorded at this locality.Mineral List
4 valid minerals.
Detailed Mineral List:
ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
ⓘ Magnetite Formula: Fe2+Fe3+2O4 |
ⓘ Microcline Formula: K(AlSi3O8) |
ⓘ Muscovite Formula: KAl2(AlSi3O10)(OH)2 |
ⓘ Quartz Formula: SiO2 |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 4 - Oxides and Hydroxides | |||
---|---|---|---|
ⓘ | Magnetite | 4.BB.05 | Fe2+Fe3+2O4 |
ⓘ | Quartz | 4.DA.05 | SiO2 |
Group 9 - Silicates | |||
ⓘ | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
ⓘ | Microcline | 9.FA.30 | K(AlSi3O8) |
Unclassified | |||
ⓘ | 'Biotite' | - | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
H | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
O | Oxygen | |
O | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
O | ⓘ Magnetite | Fe2+Fe23+O4 |
O | ⓘ Microcline | K(AlSi3O8) |
O | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
O | ⓘ Quartz | SiO2 |
F | Fluorine | |
F | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Mg | Magnesium | |
Mg | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Al | Aluminium | |
Al | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Al | ⓘ Microcline | K(AlSi3O8) |
Al | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
Si | Silicon | |
Si | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Si | ⓘ Microcline | K(AlSi3O8) |
Si | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
Si | ⓘ Quartz | SiO2 |
K | Potassium | |
K | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
K | ⓘ Microcline | K(AlSi3O8) |
K | ⓘ Muscovite | KAl2(AlSi3O10)(OH)2 |
Ti | Titanium | |
Ti | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Fe | Iron | |
Fe | ⓘ Biotite | K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 |
Fe | ⓘ Magnetite | Fe2+Fe23+O4 |
Other Databases
Link to USGS MRDS: | 10017716 |
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Other Regions, Features and Areas containing this locality
North America
- Rocky MountainsMountain Range
North America PlateTectonic Plate
- Great Plains DomainDomain
USA
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